The fund aims to track the returns of the ICE Brent crude oil front-month futures contract. It holds futures contracts close to expiration and then replaces them with next-month contracts, a process known as the "roll." This structure generates profits when oil prices rise.

It is aimed at short-term traders who want to bet on higher oil prices driven by geopolitical risk or a recovery in the global economy, and who understand the characteristics of futures-based products.

It is a passively managed (index-tracking) ETF launched in 2010 by United States Commodity Funds.

To reflect price movements in the Brent crude oil futures market, the fund invests most of its assets in futures contracts and in the margin collateral that backs them (such as US Treasuries). Returns can suffer when oil prices fall or when the futures market is in contango.

• Direct exposure to Brent crude, the global standard oil benchmark
• Ample trading volume and high liquidity

Assets under management (AUM) stand at $924.2M, and the expense ratio is 1.15% per year.

Because futures trading costs and roll costs are involved, the fee level is relatively high compared with typical equity ETFs. Note in particular that the fund is structured as a partnership that issues a K-1 tax form.

Volatility has been large amid geopolitical instability and production cuts by oil-producing countries, and prices have reacted sensitively to the outlook for global energy demand.

Money seeking short-term gains flows in heavily during inflation-hedging episodes and energy price surges, while sharp outflows can occur when oil prices fall.

It is an effective tool for directly profiting from oil price moves, but it comes with the costs and risks unique to futures strategies.

USO, shown in the table, is a sibling fund that tracks West Texas Intermediate crude oil, while UNG tracks natural gas prices. Investors who want more diversified commodity exposure can consider DBO, and those looking for a product with simpler tax reporting may find OILK a suitable alternative. USL, which spreads its holdings across 12 months, is also worth reviewing as a way to manage roll risk.

The BNO ETF offers a very clear and efficient investment choice for investors who want to participate directly in price moves of Brent crude, the backbone of the global energy market.

Oil futures are far more volatile than stocks, and if your directional call is wrong, you can suffer large losses in a short time. This is an area that calls for a strategic short-term approach rather than long-term holding.

It is an aggressive asset suited to investors seeking to benefit decisively from rising oil prices. It is best approached as a portion of a portfolio, used to adjust commodity sector exposure.